Bright blue again

Seven years ago I was sent this Logitech Trackball to replace one that had failed. The replacement lasted about another 2-3 years, and then it too failed for the same reason - left mouse button failure. I bought the replacement switches but didn't get round to reinstalling them until last year. It was well worth the effort - though now the right mouse button - which isn't used as much as the left - is starting to stick. I do have spare switches, so I could take it apart and replace it as well, if it becomes annoying.

Backblip.